Improvement in refining petroleum and other oils



E. scHALK.

` Benfing Petr'uleumand othe`r"0i|`s- No. 146,405.` PatelntedlIan".13,1814.1

@am l",

UNITED STATES@ EMIL' soHALK, or NEw YORK, N. Y.

vIMPROVEMENT iN REEINING PETROLEUM AND oTHER ons.

Specification forming part of Letters Patent No. 146,405, dated, January 13, 1874; application tiled 4 November 8, 1873.

To atl whom 1f/may concern:

Be it known that I, EMIL SGHALK, of the city, county, and State of New York, have invented a new and useful Improvement in Refining Petroleum, of which the following is a specication:

In rening petroleum the product of distillation has up to this time been first treated with sulphuric acid, (803,) the acid then being washed out with water, and the productneXt treated with caustic soda, or the ammonia of commerce. I now propose to use sulphurous acid, (S 02,) either gaseous or dissolved in water, for the first treatment, instead of the sulphuric acid, and for the second treatment I use amtreated, from twenty to a hundred feet high,

and two to ten feet broad, which I` fill with empty bottles or glass, or earthen balls, to ai'- ford the largestpossible amount of surface,

over which balls or .bottles I allow the oil to ow down slowly, and atthe same time cause the sulphurous acid to enter. at the bottom of the cylinder and pass up through in contact with the falling oil. From the bottom of this i `cylinder I draw the oil thus treated by the sulphurous acid into atank to separate the clear oil from any oxidized portion, and then, by means of a pump or by air-pressure, bring the oil to a second cylinder, similar to the rst, in which I subject it to the action of the'ammoniagasfin the same manner. Finally, in

" a third cylinder, similarly constructed, I cause the oil to ascend from the bottom upward by a pump or other means, and at the top I let in a stream of water in order to wash out any remaining acid or ammonia, or combination of the two. From this last cylinder I let the oil low out in a continuousstream to the bleaching-tanks of the ordinary kind. rIhe two gases will in some cases be used incombination in# stead of separately.

This operation is, like that described in my former patent above alluded t-o, continuous, .l

and is, therefore, preferable to the common intermittent process, in which the oil is treated in batches, all of the different operations be` ing performed in one tank; but, as before stated, I also propose' to make use of these agents in the said intermittent process.

The drawing is a side elevation of the apparatus I now propose to employ for carrying out this new mode of treatment.`

A represents the iirstcylinder;` B, the bot- 1 l toms or balls with which it is illed;` C, the n pipe for letting the distilled petroleum into the cylinder; E, the pipe for letting in the gas at the bottom; `F, the tank into which the `oil is drawn to be relieved of the oxidized part;

G, the pump for elevating it into the second` cylinder H, which also contains balls ;B. I is the pipe for letting the gas'into the bottom ot' cylinder H; J, the pipe, and N a pump for"` forcing the oil from cylinder H into the last cylinder K at the bottom, also containing balls B. L is the pipe for let-ting in the waterat the top for washing off the gases land M is a pipe for drawing oft' the oil into the bleaching-tank. As soon as the `first operationis completed in tank A, the oil is discharged.,` from it,`and the tank is iilled` anew,and the same with `the others, thus`-makin g the opera tion continuous.

Having thus described myinvention, Iclaim l as new and desire to secure by Letters Pat-v` y 1 entby sulphurous acid, substantially as'specijied.`

2. The process of renin g distilled petroleum by ammonia-gas, substantially as specified.

` EMIL SCHALK.

Witnesses A. P. THAYEE, T. B. MosHER.

1. The process of reiining distilled petroleum l l 

